Khuong G B
J Nematol. 1983 Apr;15(2):319-23.
Between 1974 and 1978, 2,842 identifications of plant-parasitic nematodes were made from more than 1,700 soil and plant samples collected in eight provinces of South Viet Nam. Species in nine genera-Helicotylenchus, Criconemoides, Meloidogyne, Pratylenchus, Tylenchorhynchus, Hoplolaimus, Hirschmanniella, Xiphinema, and Rotylenchulus-comprised 96.1% of the identifications; the remaining 3.9% were species of 11 genera. Fourteen genera were associated with rice which was grown on about 2,500,000 ha in 1970. Of these, Ditylenchus, Hirschmanniella, and Meloidogyne were most important. Ditylenchus angustus caused severe damage to about 50,000 ha of flooded rice in the Mekong Delta in 1976. Hirschmanniella spp. were found in all samples examined from flooded rice fields. Meloidogyne spp. were common in rice seedbeds, upland rice, and rice not kept flooded continuously. Meloidogyne and Pratylenchus spp. were found in roots of 22 of the 32 crop plants sampled. Little or no attempt was made in South Viet Nam to control nematodes.
1974年至1978年间，对从越南南部八个省份采集的1700多个土壤和植物样本中的植物寄生线虫进行了2842次鉴定。九个属的线虫——螺旋线虫属、环线虫属、根结线虫属、短体线虫属、针线虫属、盘旋线虫属、潜根线虫属、剑线虫属和轮线虫属——占鉴定总数的96.1%；其余3.9%为11个属的线虫。有14个属与水稻有关，1970年水稻种植面积约为250万公顷。其中，茎线虫属、潜根线虫属和根结线虫属最为重要。1976年，窄茎线虫对湄公河三角洲约5万公顷的淹水水稻造成了严重损害。在所检查的所有淹水稻田样本中均发现了潜根线虫属线虫。根结线虫属线虫在水稻苗床、旱稻和非连续淹水的水稻中很常见。在32种抽样作物中的22种作物的根部发现了根结线虫属和短体线虫属线虫。越南南部几乎没有采取任何措施来防治线虫。
